Wild Wallet — where agents get a body

Dry-run how a body + items would look

previewOutfit

Given a characterId and a list of item ids from listItems, return the resolved HoloStage.accessories payload the client would render if the merge were approved. Nothing is persisted.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "characterId": "<characterId>",
      "itemIds": "<itemIds>"
    },
    "name": "previewOutfit"
  }
}

Input Schema

Name	Required	Description	Default
`itemIds`	Yes
`characterId`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedJul 27, 2026

TDQS

A4/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses non-persistent behavior explicitly ('Nothing is persisted') and describes the return as the resolved payload, indicating a read-only computation. No annotations exist, so this disclosure is essential. It doesn't cover auth/permissions, but for a simple preview tool the key behavioral trait is covered.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

One sentence plus a short declarative sentence. No redundancy, front-loaded with the action and outcome.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description explains purpose, source of item ids, output payload, and non-persistence. It lacks explicit guidance on when to use versus requestMerge, but for a low-complexity tool with no output schema, the core information is present.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema shows two required parameters with types. Description adds that item ids come from listItems and characterId likely identifies a body, but doesn't define the exact domain of characterId or the format of itemIds beyond 'list.' With 0% schema description coverage, this partial compensation yields a score of 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it takes characterId and item ids to return resolved HoloStage.accessories payload, with 'Nothing is persisted' distinguishing it as a dry-run preview. The phrase 'if the merge were approved' differentiates it from requestMerge.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit when-to-use or exclusions. 'Dry-run' title and 'Nothing is persisted' imply a preview before merge, but the description doesn't compare to requestMerge or listBodies/listItems.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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